Besides a pressure gauge, which device can be used to measure and display water pressure in the supply line?

• A. Manometer
• B. Barometer
• C. Transducer
• D. Gauge

Answer: (C)

Measuring and displaying water pressure in a supply line using a device that goes beyond a traditional gauge relies on converting the pressure into a readable signal. A transducer does this by sensing the pressure and turning it into an electrical signal (like a voltage or current) that can be read on a digital display or fed into a monitoring system. This makes real-time pressure values easy to view remotely, log for records, or integrate with control equipment.

Compared to the other options: a manometer shows pressure through the height of a liquid column, which is less practical for continuous inline monitoring; a barometer measures atmospheric pressure, not water pressure; and a gauge is the straightforward mechanical device already used for this purpose, so the transducer offers an electronic display and remote monitoring capability that a traditional gauge does not.